In smallville 2400 out of 20,000 workers are unemployed in big town 6750 out of 75,000 workers are unemployed which town has a larger unemployment problem why

20000=100%
2400=x%
- 20000x=240000
- x=240000/20000
- x=12%

75000=100%
6750=x%
- 75000x=675000
- x=675000/75000
- x= 9%

>Therefore, Smallvile has a larger unemployment problem since it's unmployment percentage is bigger than Big town's percentage.

To find the coordinates of the vertex in this form (standard form of ax^2 + bx + c) simply use the idea that the x coordinate will always equal -b/2a so in this case...

x = -(-6)/(2*3) = 1

So the x coordinate is 1, just simply plug this into the function to get the y coordinate 

f(1) = 3*1^2 -6*1+ 15 = 3-6+15= 12.

So the vertex is (1,12)